Effects of potassium application on growth, yield, and quality of dryland cotton

IF 2 3区农林科学 Q2 AGRONOMY

Agronomy Journal Pub Date : 2024-08-30 DOI:10.1002/agj2.21664

Varshith Kommineni, Ammar B. Bhandari

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引用次数: 0

Abstract

Potassium (K) deficiency reduces cotton (Gossypium hirsutum L.) growth, development, lint yield, and fiber quality. The study's objective was to compare the effects of K fertilizer rate on cotton plant height (CPH), yield, and fiber quality in three cotton cultivars. Three cotton cultivars studied were NG 5711 B3XF (C1), PHY 480 W3FE (C2), and FM 1953GLTP (C3). Granular K fertilizer was surface broadcast and incorporated 1 week before planting at 34, 50, and 67 kg ha⁻¹. The CPH and canopy width were measured from 30 to 105 days after planting. The cotton CPH increased by 13%, 17%, and 12% in 2020 and by 6%, 4%, and 8% in 2021 with 34, 50, and 67 kg ha⁻¹ K fertilizer rates compared to control. The K application increased cotton canopy width by 39% in 2021 compared to 2020. The K application at 50 kg ha⁻¹ yielded significantly more cotton yield than the control in 2020. The cotton lint yield increased by 25%, 34%, and 9% in 2020 and by 4%, 17%, and 11% in 2021 with 34, 50, and 67 kg ha⁻¹ K fertilizer application rates than control. The cotton fiber staple length and color grade increased significantly with the 50 kg ha⁻¹ K application rate than the control in 2020. Cultivars significantly impacted Col-Rd and Col-b in 2020 and 2021. This study shows that fertilizer-K application improves not only yield, but also staple length and color grade in rainfed cotton crops.

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施钾对旱地棉花生长、产量和质量的影响

钾（K）缺乏会降低棉花（Gossypium hirsutum L.）的生长、发育、皮棉产量和纤维质量。本研究的目的是比较钾肥施用量对三个棉花栽培品种的棉花株高（CPH）、产量和纤维质量的影响。研究的三个棉花品种分别是 NG 5711 B3XF（C1）、PHY 480 W3FE（C2）和 FM 1953GLTP（C3）。颗粒钾肥以 34、50 和 67 千克/公顷的施肥量在播种前 1 周进行地表撒播和掺入。种植后 30 至 105 天测量了 CPH 和冠幅。与对照相比，施用 34、50 和 67 千克/公顷钾肥的棉花 CPH 在 2020 年分别增加了 13%、17% 和 12%，在 2021 年分别增加了 6%、4% 和 8%。与 2020 年相比，施用钾肥使 2021 年的棉花冠幅增加了 39%。2020 年，施用 50 千克/公顷钾肥的棉花产量明显高于对照。施用 34、50 和 67 千克/公顷钾肥，2020 年棉花皮棉产量比对照分别增加 25%、34% 和 9%，2021 年分别增加 4%、17% 和 11%。2020 年，施用 50 千克/公顷钾肥的棉花纤维长度和颜色等级比对照组显著增加。2020 年和 2021 年，种植品种对 Col-Rd 和 Col-b 有明显影响。这项研究表明，施用钾肥不仅能提高雨浇棉花作物的产量，还能提高其纤维长度和颜色等级。

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来源期刊

Agronomy Journal 农林科学-农艺学

CiteScore

4.70

自引率

9.50%

发文量

265

审稿时长

4.8 months

期刊介绍： After critical review and approval by the editorial board, AJ publishes articles reporting research findings in soil–plant relationships; crop science; soil science; biometry; crop, soil, pasture, and range management; crop, forage, and pasture production and utilization; turfgrass; agroclimatology; agronomic models; integrated pest management; integrated agricultural systems; and various aspects of entomology, weed science, animal science, plant pathology, and agricultural economics as applied to production agriculture. Notes are published about apparatus, observations, and experimental techniques. Observations usually are limited to studies and reports of unrepeatable phenomena or other unique circumstances. Review and interpretation papers are also published, subject to standard review. Contributions to the Forum section deal with current agronomic issues and questions in brief, thought-provoking form. Such papers are reviewed by the editor in consultation with the editorial board.